Enable rust-bindgen on globals.h

Author: edsko

hs-bindgen/test/hs-bindgen/Test/HsBindgen/Golden.hs

@@ -231,11 +231,7 @@ testCases = [
               , "unusableAnon"
               ]
       in (defaultTest "globals") {
-          -- Getting different output from (the same version of) rust-bindgen
-          -- for this test on CI than locally. Unsure why, compiled against
-          -- different llvm version? For now we just disable it.
-          testRustBindgen    = RustBindgenIgnore
-        , testTracePredicate = customTracePredicate' declsWithWarnings $ \case
+          testTracePredicate = customTracePredicate' declsWithWarnings $ \case
             TraceFrontend (FrontendParse (PotentialDuplicateGlobal info)) ->
               Just $ Expected (C.declId info)
             TraceFrontend (FrontendParse (UnexpectedAnonInExtern info)) ->